.bg{
    background: #f5f5f5;
    position: relative;
    color: #666666;
    font-size: 16px;
}
body {
    margin: 0;
}
.body {
    width: 60%;
    margin: auto;
    margin-top: 25px;
    overflow: hidden;
}
.left {
    width:20%;
    float: left;
}
.content {
    margin-left: 2%;
    background: white;
    float: left;
    width:78%;
}